Category: Buying Guide

Best Air Purifier for Bedroom in India: How to Size and Choose One

The best air purifier for a bedroom is one with enough CADR to give the room about five air changes an hour, a Sleep mode quiet enough for you, a display you can dim, and no ozone-producing ioniser. For a typical 12 × 12 ft bedroom with a 3 m ceiling, that means roughly 200 m³/h of CADR. Choose a little more than you need so it can run at a lower, quieter speed all night.

The Short Answer

A bedroom is where most people spend the longest unbroken stretch of time indoors, often seven or eight hours with the door shut. That makes it the first room to equip. Why sleep and bedroom air matter is covered in our bedroom air quality and sleep guide; this one is about buying the right machine. Four checks decide it, in order: CADR for the room, night-time noise, how dark it can go, and whether it is safe to run next to a sleeping child or adult.

Sizing: 10×10, 12×12 and 14×14 ft Bedrooms

The formula is the same for every room:

CADR (m³/h) = floor area (m²) × ceiling height (m) × air changes per hour. 1 sq ft = 0.0929 m². We use a 3 m ceiling and five air changes an hour, a good target for Indian winters.

Bedroom	Area	Volume (3 m ceiling)	CADR for 4 ACH	CADR for 5 ACH
10 × 10 ft (100 sq ft)	9.3 m²	27.9 m³	111 m³/h	139 m³/h
12 × 12 ft (144 sq ft)	13.4 m²	40.1 m³	161 m³/h	201 m³/h
14 × 14 ft (196 sq ft)	18.2 m²	54.6 m³	218 m³/h	273 m³/h

Worked through for the middle row: 144 × 0.0929 = 13.4 m²; × 3 m = 40.1 m³; × 5 = about 201 m³/h. If your ceiling is lower, say 2.7 m, the numbers fall in proportion. If an attached dressing area or open bathroom door adds volume, include it.

Why buy more than the minimum? CADR is measured at the highest fan speed, and at night you will want a lower one. A purifier with headroom can run on its quiet setting and still deliver the air changes the room needs. That is the single best answer to “will it keep me awake?”. For a small room such as a 10 × 10 ft study, a compact unit is enough; for larger rooms, our air purifier size guide goes further.

Enter your bedroom’s size and ceiling height to get the CADR it needs.

Size Your Room →

Sleep-Mode Noise for Light Sleepers

Noise decides whether a bedroom purifier stays on through the night or gets switched off at 2 a.m. What to check:

The stated dB figure at the lowest speed or in Sleep mode. Compare models on that number, not on the maximum-speed figure. Be cautious with listings that give no figure at all.
The character of the sound. A steady low hum is easier to sleep through than a fan that keeps ramping up and down. A Sleep mode that holds a quiet speed helps light sleepers.
Beeps and clicks. Button tones and alert chimes are irritating at night; check whether they can be silenced.
Return policy. Sensitivity to sound is personal. A trial or money-back period lets you test it in your own room.

Display Dimming and Night Lights

Bright LEDs and screens can disturb sleep. Look for a display that dims or switches off in Sleep mode, and a colour ring or indicator that can be turned off. A numeric PM2.5 readout is valuable by day, so you can see the room clean up, but at night you want darkness. Scheduling helps: set the purifier to enter Sleep mode at bedtime and return to Auto in the morning.

No Ozone, Child Lock and Other Bedroom Checks

No ozone. Some ionisers and plasma features produce ozone, a lung irritant. A purifier that sits a metre from your pillow should not add one. Choose HEPA and activated carbon, and if there is an ioniser, make sure it can be switched off. See the HEPA vs ioniser vs UV comparison for detail.
Child lock. Small children love buttons. A child lock stops midnight speed changes, and a stable base matters if toddlers pull themselves up on furniture.
Timer and schedule. Useful if you want it to run hard before bed and quietly after.
Filters you can buy. A bedroom purifier runs for many hours a day, so check the replacement filter is listed and in stock. Filters are the larger part of the running cost.

Where to Put It in the Bedroom

Place the purifier near the bed, within a couple of metres, so the air you breathe is the air being cleaned. Keep it off the wall with clear space around the intakes, away from curtains, and on the floor or a low, stable surface. Do not point the outlet straight at your face: a constant breeze can dry your eyes and throat. Close the door and windows while it runs, and ventilate in the morning when the outdoor air allows. For AC and ceiling-fan placement, see where to place an air purifier in an Indian home.

If anyone wakes with wheezing, breathlessness or a cough that does not settle, see a doctor. A purifier lowers exposure to particles; it does not treat a condition.

Where Boon Airvana Fits

Boon Airvana has a CADR of 380 m³/h. Against the table above, that works out to about 13.6 air changes an hour in a 10 × 10 ft room, more than nine in a 12 × 12 ft room and about 7 in a 14 × 14 ft room, all at a 3 m ceiling. That headroom is what lets it run on a lower setting at night.

Sleep mode runs it quietly for the night; we do not publish a dB figure here, so check the current listing and use the 10-day money-back guarantee to test it in your own room.
Watch faces on the full-colour display include an AQI-only view; app scheduling can switch modes at bedtime.
H13 HEPA, activated carbon, a washable pre-filter and an anti-bacterial coating on the filter; no ioniser is listed among its stages.
Child lock on the unit and in the Boon app, plus a timer and four fan speeds.

When it is more than you need: a single small 10 × 10 ft room needs only about 140 m³/h, and a compact HEPA unit with a stated CADR will do that job. Airvana is ₹14,900 at the time of writing.

Frequently Asked Questions

Which is the best air purifier for a bedroom?

The best one for your bedroom is the one whose CADR gives the room about five air changes an hour, with a quiet Sleep mode, a dimmable display, no ozone-producing ioniser and filters you can buy. For a 12 by 12 ft bedroom with a 3 m ceiling, that means roughly 200 m³/h of CADR. Extra headroom lets it run quieter.

What CADR do I need for a 12×12 bedroom?

A 12 by 12 ft room is 144 sq ft, or about 13.4 square metres. With a 3 m ceiling it holds about 40 cubic metres of air. For five air changes an hour, you need about 201 m³/h of CADR; for four, about 161 m³/h. A lower ceiling reduces the figure in proportion.

Is it safe to sleep with an air purifier on?

Yes, for a HEPA and activated carbon purifier. Avoid models with an always-on ioniser or plasma feature that can produce ozone. Place it near the bed but not blowing directly on your face, keep the room closed while it runs, and ventilate in the morning when the outdoor air allows.

How quiet should a bedroom air purifier be for a light sleeper?

Compare the stated noise figure in dB at the lowest speed or in Sleep mode, not at maximum. A steady low hum is easier to sleep through than a fan that keeps changing speed. Choose a unit with more CADR than the room needs so it can stay on a quiet setting, and use a return period to test it.

What is the best air purifier for a small room?

For a small room such as a 10 by 10 ft bedroom or study with a 3 m ceiling, about 140 m³/h of CADR gives five air changes an hour. A compact HEPA purifier with a stated CADR in that range is enough. Make sure it has a true HEPA filter, a sealed housing and a quiet low speed.

Where should I place an air purifier in my bedroom?

Place it within a couple of metres of the bed, off the wall, with clear space around its intakes and away from curtains. Keep the outlet from blowing straight at your face, which can dry your eyes and throat. Keep it out of the direct blast of the AC and keep doors and windows closed while it runs.

Boon Airvana gives a 12 × 12 ft bedroom more than nine air changes an hour, with Sleep mode and child lock. ₹14,900 at the time of writing.

See Boon Airvana →

October 19, 2026

Assembled RO vs Branded Water Purifier: Is the Saving Worth It?

A locally assembled RO purifier can purify water: the basic parts are the same kind of sediment filters, carbon, membrane and pump. The risk is in what you cannot see, such as unknown membranes, plastics that may not be food-grade, no certification, no monitoring and warranty or service that depends on one person. If you go assembled, insist on component details, a TDS test in front of you and a written warranty. A branded purifier is worth paying more for when it brings a reliable service network, monitoring and a warranty that is honoured.

What an assembled RO is

An assembled RO is built by a local dealer or technician from separately bought parts: a cabinet, a pump, filter housings, a membrane, a UV or UF stage if included, a tank, and fittings. It is often sold under a shop’s own name or with no name at all, typically for noticeably less than a branded unit with similar-sounding stages.

“Branded” here means a purifier designed, specified and supported by one company that puts its name on the whole system, whether sold in shops or online. Brands vary widely in quality too, which is why our guide to water purifier brand red flags is worth reading whichever way you lean.

What assembled units get right

The principle is the same. RO is RO. A decent membrane with good pre-filtration will reduce TDS whether or not a brand name is on the cabinet.
Lower upfront price. You are not paying for a brand’s design, testing, marketing or national service network.
A local person you can call. A good neighbourhood technician can be quick and practical, and parts are usually generic and easy to find.

For some homes, especially where a trusted local technician has a long track record, an assembled unit is a reasonable choice. The point is to go in knowing what you are giving up.

The real risks

Risk	Why it matters
Unknown membrane and filters	Membrane quality decides how much TDS is removed and how long it lasts. Unlabelled parts make it impossible to know what you have or replace like for like.
Non-food-grade plastics	Tanks, housings and pipes touch your drinking water every day. Without specifications you cannot know what they are made of.
No certification	There is no third-party check that the system as a whole performs as claimed. See our guide to BIS certification for water purifiers.
No monitoring	Most assembled units show nothing. You find out the membrane is spent when the water tastes wrong, or not at all.
Unknown rejection and recovery	Nobody can tell you how much TDS it removes or how much water it sends to drain at your input TDS.
Unclear warranty and service	A verbal promise from one person is only as good as that person’s availability. If the shop closes or the technician moves, support goes with them.
TDS controller set too high	Some units mix unpurified water back in to raise TDS. Set carelessly, this lets back in whatever the RO removed.

The cabinet hides the difference. Two purifiers can list the same stages and perform very differently. What you are paying a brand for, when it is worth it, is knowing what is inside and someone accountable when it goes wrong.

Whichever you choose, start with your input TDS. Look up typical TDS for your pincode so you can judge any purifier’s results.

Check Your Water →

If you go assembled: what to ask and check

Component list in writing: the membrane’s make, model and rated input TDS, the pump, the UV or UF stage if any, and the filters. Generic is fine; unknown is not.
Food-grade materials: ask what the tank, housings and pipes are made of, and whether they are food-grade.
A TDS test on installation: measure input from your tap and output from the purifier in front of you, with your own meter if possible. Write both numbers down.
The TDS controller setting: ask whether there is one and what it is set to. On a supply with fluoride, nitrate or arsenic, it should not be letting unpurified water through.
Warranty in writing: what is covered, for how long, and who honours it. Get a bill with the shop’s name, address and contact.
Filter prices and availability: what each replacement costs and whether you can buy the same part elsewhere if needed.

Where you buy matters too. Our guide to buying a water purifier online vs offline covers what to check at each.

When branded is worth it

Service you can rely on: a company team that installs and services the unit, with a record of every visit.
Monitoring: a display or app showing input and output TDS and filter health, so problems surface early.
Known, consistent parts: replacements that match what was designed and tested.
A warranty with a company behind it, and a money-back window if the purifier does not suit you.
Your supply is difficult: high TDS, or contaminants such as fluoride or arsenic, where getting the system right matters most.

The total cost view

The sticker price is only the start. Over several years, a purifier’s cost includes filters, membranes, service visits and repairs, plus the cost of drinking poorly purified water without knowing it. An assembled unit can be cheaper overall if its parts are good and the technician stays around. It can also cost more if a poor membrane needs early replacement or a failed part means buying a new purifier. Our guide to the true cost of owning a water purifier shows how to add it up.

Where Boon fits

Boon was founded in 2013 by ex-IIT Kanpur engineers, is backed by the Technology Development Board (Govt. of India), NITI Aayog and Roca, and runs water systems in more than 4,000 organisations and 400+ hotels across nine countries. Our home purifiers are installed and serviced by Boon’s own team, not a third-party agency. Boon Homie, our wall-mounted RO, has a membrane rated for input up to 2000 TDS and WaterAI monitoring of input TDS, output TDS, temperature and filter health, so you can see on day one, and every day after, what the purifier is doing. It comes with a 2-year warranty and a 10-day money-back guarantee, at ₹21,900 at the time of writing. If you want the purifier hidden under the sink, Boon Tap offers the same WaterAI monitoring and warranty from ₹23,500 at the time of writing.

Where Boon is not the answer: if your budget is well below these prices and you have a trusted local technician with a long record, a carefully specified assembled unit, checked as above, can serve you well.

Frequently Asked Questions

Is an assembled RO water purifier safe?

It can be, if it uses a good membrane, food-grade parts and proper pre-filtration, and is installed and maintained well. The risk is that you usually cannot verify any of that, because parts are unlabelled and there is no certification or monitoring. Ask for a written component list and test input and output TDS in front of the technician.

Why are assembled RO purifiers cheaper than branded ones?

You are not paying for a brand’s design, testing, marketing, monitoring or service network, and parts are often generic. That saving is real. The trade-off is less certainty about component quality, no third-party certification and support that depends on one shop or technician rather than a company with a record of every service visit.

What should I check before buying an assembled RO?

Get a written list of components, including the membrane’s rated input TDS, and ask whether the tank and pipes are food-grade. Have input and output TDS measured in front of you at installation. Ask about any TDS controller setting. Get the warranty in writing on a bill with the shop’s name, address and contact details.

Is a branded water purifier worth the extra cost?

It is worth it when the brand brings things an assembled unit cannot: its own installation and service team, monitoring of TDS and filter health, known replacement parts, and a warranty and money-back window backed by a company. On difficult supplies with high TDS or contaminants such as fluoride, getting the system right matters most.

Can I replace parts in an assembled RO with branded parts?

Often, yes, because many housings and fittings use standard sizes. Check that a replacement membrane suits your input TDS and that the pump can deliver the pressure it needs. Mixing parts does not give you the monitoring, warranty or service of a branded system, but it can improve an assembled unit’s purification.

Homie is installed and serviced by Boon’s own team, shows input and output TDS on WaterAI, and comes with a 2-year warranty and a 10-day money-back guarantee.

See Boon Homie →

October 19, 2026

Water Purifier for High TDS: What Actually Works in India

For high TDS water you need a reverse osmosis (RO) purifier whose membrane is rated for your actual input TDS, and a water test that tells you what makes up that number. Most home RO purifiers are rated for input up to about 2000 mg/L; above that, a home unit on its own is the wrong tool and you need pre-treatment or a heavier system. Test first, then buy.

What a TDS Rating Actually Means

TDS (total dissolved solids) is the total weight of everything dissolved in a litre of water, measured in mg/L, which most meters show as ppm. In Indian groundwater it is mostly salts of calcium, magnesium, sodium and potassium, with bicarbonate, chloride and sulphate, and smaller amounts of other things.

When a purifier says its membrane is rated for input up to 2000 TDS, that describes the water going in, not the water coming out. It is the range the membrane and the rest of the system are designed and specified for. Inside that range you can expect the membrane to deliver its intended performance and working life. It is not a promise about output TDS, and it is not a promise about every contaminant.

Two points that save people money:

Only RO meaningfully reduces TDS. UV and UF are good at microbes and particles, but dissolved salts pass straight through them.
Low TDS does not need RO by default. If your supply is well under 500 and microbial safety is the main worry, read whether you need RO if your TDS is below 200 before buying one.

What BIS IS 10500 Says About TDS

India’s drinking water standard, BIS IS 10500, sets two TDS figures, plus limits for the substances that often travel with high TDS groundwater.

Parameter	BIS IS 10500 limit	Why it matters with high TDS
TDS	500 mg/L acceptable; 2000 mg/L permissible where no alternative source exists	The headline number
Total hardness	200 mg/L (acceptable)	Drives scaling on the membrane and kettles
Fluoride	1.0 mg/L (acceptable)	Common in some high TDS groundwater
Nitrate	45 mg/L	Can enter shallow borewells near farms and drains
Iron	0.3 mg/L	Clogs pre-filters; stains buckets orange
Arsenic	0.01 mg/L	Found in known hotspot regions; needs a lab test

Read the TDS row this way: under 500 is acceptable as drinking water; 500 to 2000 is tolerated only where there is no better source; above 2000 the raw water does not meet the standard at all. Water in the upper range often tastes salty or bitter and leaves heavy white scale on kettles and taps.

The TDS number does not tell you what is in the water. A reading of 1200 that is mostly calcium bicarbonate is a very different problem from 1200 that carries fluoride or nitrate above the limit. A meter gives you the total; only a lab test gives you the breakdown.

Why Output TDS Depends on Input

An RO membrane rejects a proportion of dissolved salts, not a fixed amount. That simple fact explains most confusion about output TDS.

Take an illustrative membrane that lets through one part in twenty of what comes in (round arithmetic, not the specification of any product). Feed it 400 mg/L and the output is around 20. Feed it 1600 and the output is around 80. Same membrane, same health, four times the output TDS. So a neighbour’s output reading tells you nothing about what you will get unless your input matches theirs.

Output also rises with colder water, lower pressure and an ageing membrane. A purifier that shows input and output TDS lets you watch this over months; otherwise a handheld TDS meter used monthly does the same job.

What Happens Above the Rated Input

Feeding water above the rated TDS rarely causes a sudden breakdown. It causes a slow, expensive decline:

Scaling. As the membrane pushes pure water through, salts concentrate on the reject side. Past a point, hardness salts come out of solution and coat the membrane.
Shorter membrane life. A scaled or fouled membrane passes more salt and less water, so it needs replacing sooner.
Higher output TDS. Because rejection is proportional, very high input pushes output up even when the membrane is new.
Faster pre-filter clogging. High TDS groundwater often comes with sediment and iron, which block sediment filters quickly.

Pre-Treatment When TDS Is Very High

If your water tests near or above 2000, the honest answer is to treat it in steps rather than ask one under-counter box to do everything:

Sediment and iron first. If water turns yellow or brown after standing, or stains buckets orange, iron is likely above 0.3 mg/L. An iron removal filter ahead of the purifier protects everything downstream.
Hardness control. A softener ahead of the RO reduces scaling. Know its limit: ion-exchange softening swaps calcium and magnesium for sodium, so it makes water softer but does not reduce TDS. It is protection for the membrane, not a substitute for it.
A system sized for the job. For a household with heavy use or very high input, a freestanding system with more capacity is the sensible step up, such as Boon Tall. For water consistently well above 2000, talk to a water specialist about a commercial or multi-stage setup and, if possible, an alternative or blended source.

Borewell supplies need extra care because they change with the seasons and the water table. Our guide to the best water purifier for borewell water covers that in detail.

Test Before You Buy

Buying a purifier for high TDS without testing is buying blind. A sensible sequence:

Look up your area. A pincode lookup tells you what TDS is typical nearby, a useful starting point.
Measure your own tap. A handheld TDS meter costs little and shows what actually reaches your kitchen. Borewell, tanker and municipal water in the same building can differ widely.
Get a lab test if TDS is high. Ask for fluoride, nitrate, iron, hardness and, in known hotspots, arsenic. That tells you whether RO alone is enough.
Re-test after installation. Confirm the purified water against the BIS limits above.

Start with the number. Check typical TDS for your pincode, then confirm with a meter at your own tap before you choose a purifier.

Check Your Water →

Getting the Balance Right After RO

RO reduces calcium and magnesium along with everything else. With high input TDS, the output often still carries a noticeable amount. With moderate input, output can be quite low and taste flat to people used to harder water.

Two ways purifiers handle this. A TDS controller blends a little unpurified water back in, which raises TDS but also lets back some of what you were trying to remove, so it suits only supplies with no contaminant problem. A mineral cartridge adds selected minerals back after purification, which keeps the purification itself intact. Water is not usually the main dietary source of these minerals, so think of this mainly as taste and mouthfeel, and get medical advice rather than relying on drinking water if you have a specific mineral deficiency.

Where Boon Fits, and Where It Does Not

Boon Homie is a wall-mounted RO with a CoreRO membrane rated for input up to 2000 TDS inside a 5-stage UltraOsmosis process, ending with in-line LED UV before the tank. WaterAI monitoring shows input TDS and output TDS, so you can watch the proportional behaviour described above. Mineral Enhancers sit on their own cartridges, separate from the main filter, including Reboot, which restores calcium and magnesium. It is ₹21,900 at the time of writing.

Boon Tap is the under sink option: an 8-stage UltraOsmosis RO with an 8-litre tank and WaterAI monitoring, also rated for input up to 2000 TDS, from ₹23,500 at the time of writing. Both come with free installation by Boon’s own team and a 2-year warranty.

Where they are not the answer:

Input consistently above 2000 TDS: neither is rated for it. Use pre-treatment or a heavier system first.
Low TDS with only a microbial concern: RO may be more than you need. Boon Tap UF, which has no RO, exists for low-TDS supplies.
Hard water at the shower and taps: a drinking water purifier treats one outlet. Scale in bathrooms needs a whole-house softener.

Frequently Asked Questions

What TDS level is safe for drinking water in India?

BIS IS 10500 sets 500 mg/L as the acceptable limit for TDS and 2000 mg/L as the permissible limit where no alternative source exists. Water above 2000 does not meet the standard. TDS on its own does not prove water is safe, though, because it does not tell you about microbes, fluoride, nitrate or arsenic. Use a lab test alongside a TDS reading if your supply is high.

Can a home RO purifier handle water above 2000 TDS?

Most home RO purifiers are rated for input up to about 2000 TDS. Above that, the membrane scales faster, output TDS rises and the membrane needs replacing sooner. If your water is consistently above the rating, add pre-treatment such as iron removal and softening, or move to a larger system designed for that load, and check what the warranty covers.

Does a water softener reduce TDS?

No. An ion-exchange softener swaps calcium and magnesium for sodium, so the water becomes softer and scales less, but the total dissolved solids stay roughly the same. A softener is useful in front of an RO purifier because it protects the membrane from scale, and for bathroom taps and appliances, but it does not make high TDS water drinkable on its own.

Why is the output TDS of my RO purifier going up?

Output TDS rises when input TDS rises, because a membrane rejects a proportion of salts rather than a fixed amount. It also rises with an ageing or scaled membrane, low water pressure and colder water. Check your input TDS first. If input is steady and output keeps climbing over weeks, the membrane or pre-filters likely need service.

Is borewell water with 1500 TDS drinkable after RO?

Often yes, provided the RO membrane is rated for that input and a lab test shows no problem the purifier is not designed for. Borewell water at 1500 TDS can also carry fluoride, nitrate or iron, so test for those, install pre-filtration if iron is high, and re-test the purified water against BIS IS 10500 after installation.

Do I need a mineral cartridge if my water has high TDS?

Not necessarily. With high input TDS, RO output often retains a noticeable mineral content and tastes fine. A mineral cartridge helps most when output TDS is low and the water tastes flat. It is mainly about taste and mouthfeel. If you have a diagnosed mineral deficiency, follow a doctor’s advice rather than relying on drinking water to correct it.

If your water is within 2000 TDS, Boon Homie gives you RO, UV, live input and output TDS, and optional mineral balance on one wall-mounted unit.

See Boon Homie →

October 16, 2026

Under Sink Water Purifier Disadvantages: An Honest List

The main disadvantages of an under sink water purifier are that it needs free cabinet space and plumbing access, a hole in the counter for its faucet, a drain connection for reject water, and a higher upfront cost than basic wall units. A badly installed one can also leak unseen inside the cabinet. Most of these are solved by good installation, but if your cabinet is full or you rent without permission to drill, a wall-mounted purifier is the better choice.

The Disadvantages at a Glance

Disadvantage	How much it matters	Mitigation
Uses cabinet space	High in small kitchens	Measure first; plan storage around it
Needs plumbing access	Medium	Professional installation; check inlet and drain positions
Counter hole for the faucet	Medium; permanent	Drill once, in the right place; some sinks have a spare hole
Harder to reach for service	Low to medium	Keep the cabinet front clear; rely on monitoring alerts
Renters may need permission	High for tenants	Ask the owner first, or choose wall-mounted
Reject-water drain line	Low (all RO needs a drain)	Route it properly to the sink waste
Higher upfront cost	Medium	Compare five-year costs, not just sticker price
Leak risk inside a cabinet	Low if well installed; serious if not	Quality fittings, a leak check, regular look under the sink

For the full picture of how under sink RO works and what to look for, see our under sink RO water purifier buying guide. Below, each disadvantage in detail.

Cabinet Space and Plumbing

Space. The purifier and its storage tank take up most of the cabinet under the sink, which in many Indian kitchens is already home to the waste pipe, a dustbin and cleaning supplies. In a compact kitchen this is the biggest real cost of going under sink. Open the cabinet and measure before you buy: width, depth and height, minus the space the waste pipe and any sink basket take.

Plumbing. The purifier needs an inlet from the cold water line and a drain connection, both inside the cabinet. In most modern kitchens these are close by. In older kitchens or unusual layouts, the installer may need to extend a line. This is a one-time job, but it is why under sink purifiers are not a casual DIY install. Our water purifier installation guide explains what a proper installation involves.

Power. An RO purifier needs electricity, so you need a socket inside or near the cabinet. If there is none, add one before installation day.

The Faucet Hole and Harder Access

The faucet hole. An under sink purifier dispenses through its own faucet on the counter or sink deck. That usually means drilling a hole in the countertop. On granite or quartz this is routine for a trained installer, but it is permanent. Some sinks come with a spare tap hole that can be used instead. Decide on the faucet position carefully: within easy reach, clear of the main tap, and over the sink.

Harder access. Filters and the tank sit in a cabinet, so service means kneeling and clearing the cabinet. For most owners this matters little, because filter changes and servicing happen only occasionally and are done by a technician. It matters more for anyone who likes to do their own maintenance or who has difficulty bending down. A purifier with monitoring that alerts you on filter health removes the need to keep checking inside the cabinet.

Short on cabinet space or renting? Boon Homie is a wall-mounted RO with UV, an 8-litre tank and WaterAI monitoring, no counter hole needed.

See Boon Homie →

Renting, the Drain Line and Upfront Cost

Renting. Drilling a countertop and changing plumbing are changes to the owner’s property. Tenants should ask permission in writing first. If the answer is no, or you move often, a wall-mounted purifier needs only a few wall fixings and is easier to take with you.

The drain line. All RO purifiers, under sink or wall-mounted, send some reject water to a drain. Under sink, the drain line connects into the sink waste inside the cabinet, which is actually tidy. The disadvantage is only that it must be routed properly, without kinks and with the right fitting, or it can gurgle or drip.

Upfront cost. Under sink purifiers usually cost more than basic wall-mounted units, partly for the faucet and fittings and partly because of the more involved installation. Look at the five-year cost instead of the sticker price: filters, service and any maintenance plan often decide the true difference.

Leak Risk Inside a Cabinet

This is the disadvantage worth taking most seriously. A wall-mounted purifier that drips is visible immediately. An under sink purifier that drips may go unnoticed for days, soaking the cabinet floor. Wooden and particle-board cabinets swell when they stay wet.

Leaks almost always come from installation, not from the purifier itself: a fitting not fully seated, a pipe cut unevenly, a drain connection pushed rather than secured. Mitigation is straightforward:

Use installation by trained technicians rather than a general plumber unfamiliar with RO fittings.
Ask the installer to run the purifier and check every joint before leaving.
Look under the sink after the first day and the first week, then whenever you open the cabinet.
Keep the cabinet floor clear enough that you would see water.

The honest summary: most under sink disadvantages are one-time installation questions. The two that persist are lost cabinet space and the permanence of the counter hole. If neither bothers you, the rest is solvable.

Who Should Not Buy Under Sink

Tenants without written permission to drill the counter or alter plumbing.
Kitchens where the under sink cabinet is small or already full.
People who move house often.
Anyone who wants to see the display and dispense at a glance at standing height.
Buyers whose budget is tight, where a basic wall unit does the same purification job.

For these homes, a wall-mounted RO is the practical answer. Boon Homie is a wall-mounted RO with a 5-stage UltraOsmosis process, in-line LED UV before the tank, a 20 litres per hour rate into an 8-litre tank and WaterAI monitoring, ₹21,900 at the time of writing. If you are still weighing formats, our under sink vs countertop comparison sets out the trade-offs side by side.

Who Should, and Where Boon Tap Fits

Under sink suits owners renovating or setting up a kitchen, households who want a clear counter and wall, and modular kitchens with a spare cabinet and a power point nearby. If you have the space and can drill the counter, its disadvantages are mostly handled at installation.

Boon Tap is an under sink RO: the purifier sits in the cabinet below the counter with a dedicated faucet on the counter. It has an 8-stage UltraOsmosis RO rated for input up to 2000 TDS, an 8-litre tank and WaterAI monitoring, so filter health is visible without opening the cabinet. Installation is free and done by Boon’s own team, not a third-party agency, which is the main answer to the leak and plumbing concerns above. It carries a 2-year warranty and a 10-day money-back guarantee, and is from ₹23,500 at the time of writing. If your TDS is low, Boon Tap UF, which has no RO, exists for those supplies.

Frequently Asked Questions

What are the disadvantages of an under sink water purifier?

It takes up cabinet space, needs plumbing and power access under the sink, requires a hole in the counter for its faucet, needs a drain connection for reject water, usually costs more upfront than a basic wall unit, and a badly installed one can leak unseen inside the cabinet. Most of these are handled by careful measurement and professional installation.

Do under sink water purifiers leak?

A well-installed under sink purifier should not leak. Leaks almost always come from installation: a fitting not fully seated, an uneven pipe cut or a poorly secured drain connection. Because the unit is in a cabinet, a drip can go unnoticed. Use trained installers, ask them to check every joint, and look under the sink after the first day and week.

Can I install an under sink water purifier in a rented flat?

Only with the owner’s permission, ideally in writing, because it usually means drilling a hole in the countertop and connecting to the plumbing. If the owner says no, or you move often, a wall-mounted purifier is more practical. It needs only a few wall fixings, a water point, a drain and power, and is easier to take with you.

Does an under sink RO need a hole in the countertop?

Usually, yes. The purifier dispenses through its own faucet, which is mounted through a hole in the countertop or sink deck. On granite or quartz a trained installer can drill it cleanly, but it is permanent. Some sinks have a spare tap hole that can be used instead, so check yours before installation day and agree the faucet position in advance.

Is an under sink water purifier harder to service?

Slightly. The filters and tank sit inside the cabinet, so a technician has to clear the cabinet and work at floor level. For most owners this makes little difference, because filter changes and servicing are occasional and done by the brand’s technician. A purifier that shows filter health and alerts you removes the need to check inside the cabinet yourself.

Who should choose wall-mounted instead of under sink?

Choose wall-mounted if you rent without permission to drill, your under sink cabinet is small or full, you move house often, you want the display at standing height, or your budget is tight. A wall-mounted RO gives the same kind of purification without a counter hole or cabinet space, and is simpler to install and reach.

If you have the cabinet space, Boon Tap is an 8-stage under sink RO with WaterAI monitoring, installed free by Boon’s own team.

See Boon Tap →

October 16, 2026

Wall Mounted Water Purifier: Buying Guide for Indian Kitchens

A wall mounted water purifier hangs on the kitchen wall, usually beside or above the sink, and dispenses from its own tap. It is the default in Indian kitchens because it keeps the counter free, needs no cabinet, and is easy for a technician to reach. The mounting style matters less than what is inside: choose by your input TDS, the stages, storage, monitoring and service.

Why wall mounted is India’s default

Walk into most Indian kitchens and the purifier is on the wall. That is not an accident:

Counter space is for cooking. Indian cooking uses a lot of counter: chopping, grinding, rolling rotis. A purifier on the wall takes none of it.
The cabinet below the sink is often damp or full. Many kitchens use it for cleaning supplies or a bin, and some have no cabinet there at all.
RO needs a drain, and the sink has one. A wall unit near the sink keeps the reject-water line short and simple.
Service is easy. A technician can open the unit and change filters without crawling into a cabinet.
It suits renters. Fitting needs only a few screws in the wall, and the unit comes down cleanly when you move.

When wall mounted wins, and when it does not

Your situation	Wall mounted	Under sink	Countertop
Renting, may move in a year or two	Good fit	Possible, more plumbing work	Good fit
No usable cabinet under the sink	Good fit	Not possible	Good fit, uses counter
Small kitchen, counter is precious	Good fit	Good fit	Takes counter space
Modular kitchen, want a clean backsplash	Visible on the wall	Good fit, only a faucet shows	Visible on the counter
Tiled or stone wall you do not want to drill	Needs drilling	Needs a counter hole for the faucet	No drilling

Wall mounted wins for renters, kitchens without a usable cabinet, and anyone who wants easy service access and a display at eye level. It loses when you want the purifier out of sight in a finished modular kitchen: an under-sink purifier with a dedicated faucet, such as Boon Tap, suits that better. For the trade-offs in detail, read under sink vs wall mounted water purifiers and under-sink vs countertop purifiers. Renters should also see our water purifier guide for renters.

What to check before you buy

TDS rating vs your supply. Every RO membrane is rated for a maximum input TDS. Know your supply first: BIS IS 10500 sets 500 mg/L as acceptable and 2000 mg/L as permissible where there is no alternative source. Borewell and tanker water can be far higher than municipal supply.
Stages, and what each does. Look for sediment pre-filtration, carbon for chlorine and taste, RO for dissolved solids and UV for microbes. More stages are not better by themselves; ask what each one is for.
Storage size and LPH. Storage is how much purified water is ready at once; litres per hour (LPH) is how quickly it refills. A family that fills bottles in the morning needs both to keep up.
UV placement. UV can sit before the tank, inside it or at the outlet. Ask where it is and what it treats, so you know whether water is disinfected on its way into storage or on its way out.
Monitoring. A display of input and output TDS, and filter health, tells you the purifier is working rather than leaving you to guess.
Manual dispensing in power cuts. If dispensing depends on electricity, stored water is locked in during an outage. Ask how you get water out with the power off.
Service network. Ask who installs and services it: the brand’s own team or a third-party agency, and how quickly they respond in your city.
Warranty terms. Read what is covered and for how long, and what is excluded. A longer headline number with many exclusions is worth less than it looks.

Item one on the checklist is your input TDS. Look up typical TDS for your pincode before you compare purifiers.

Check Your Water →

Mounting height and kitchen placement

Where the purifier goes affects how easy it is to use and how long it lasts. A good spot is:

Near the sink drain, so the reject-water line is short and not stretched across the kitchen.
Within reach of a socket, ideally a dedicated, earthed socket. Avoid extension boards near water.
Away from the stove. Heat and cooking fumes age the casing and components; do not mount a purifier above or right beside the hob.
Out of direct sunlight, which warms the stored water and can encourage algae in any part that lets light through.
At a comfortable height, with the tap easy to reach for the adults who use it most, and enough clearance under the nozzle for your tallest glass or bottle.
With space around it for the technician to open the unit and change filters.

A worked example: Boon Homie against the checklist

Boon is a water-technology company founded in 2013 by ex-IIT Kanpur engineers, backed by the Technology Development Board (Govt. of India), NITI Aayog and Roca, with systems running in more than 4,000 organisations and 400+ hotels across nine countries. Here is how our wall-mounted RO, Boon Homie, answers each checklist item.

Checklist item	Boon Homie
TDS rating	CoreRO membrane rated for input up to 2000 TDS
Stages	5-stage UltraOsmosis: InletShield (5-micron grooved pre-filter), ProFlow (5-micron sediment and turbidity control), CarbonCorrect (chlorine and chemical taste), CoreRO, UV ProGlow
Storage and LPH	20 litres per hour into an 8-litre tank
UV placement	In-line LED UV before the tank
Monitoring	WaterAI: input TDS, output TDS, temperature, filter health, self-diagnostics; a cove light shows alerts at a glance
Power cuts	Patented manual filling: draw already-purified stored water by hand (purification itself needs power)
Service	Installed and serviced by Boon’s own team, not a third-party agency; installation is free
Warranty	2 years, plus a 10-day money-back guarantee and free shipping

Beyond the checklist, Homie adds three Water Profile buttons (Active, Daily, Bev) and three Mineral Enhancers (Balance, Uplift, Reboot), each on its own cartridge separate from the main filter, so switching never touches purification. It has soft-touch button dispensing, a glass front with an LED display, a stainless-steel nozzle, structured fittings and internal noise damping. Homie is ₹21,900 at the time of writing, on pre-order with deliveries from 15 October 2026. Boon Homie Pro adds instant hot water (no cold) at ₹25,900 at the time of writing.

When Homie is not the right choice

Your supply is above 2000 TDS. Homie’s membrane is not rated for it.
You want the purifier hidden. In a modular kitchen where only a faucet should show, an under-sink unit is the better format.
Your water is already low in TDS and microbes are the only concern. You may not need RO at all.
You need chilled water from the purifier. Neither Homie nor Homie Pro cools water.
You need exact dimensions now. Ask Boon for the wall space Homie needs before you plan a tight spot.

Frequently Asked Questions

Is a wall mounted water purifier better than under sink?

Neither is better in general; they suit different kitchens. Wall mounted suits renters, kitchens without a usable cabinet below the sink, and anyone who wants easy service access and a display at eye level. Under sink suits finished modular kitchens where you want only a faucet on the counter. The purification inside matters more than the mounting style.

Where should a wall mounted water purifier be installed?

Near the sink drain so the reject line is short, within reach of an earthed socket, away from the stove’s heat and out of direct sunlight. Mount it at a height where the tap is easy for adults to reach and your tallest glass or bottle fits under the nozzle, with space around it for filter changes.

What TDS can a wall mounted RO purifier handle?

It depends on the RO membrane, not the mounting style. Each membrane is rated for a maximum input TDS, so check the rating against your supply before you buy. Boon Homie’s membrane is rated for input up to 2000 TDS, which matches the BIS IS 10500 permissible limit for drinking water where there is no alternative source.

What storage capacity do I need in a water purifier?

Think about how much purified water your household uses at its busiest moment, such as filling bottles in the morning, and how fast the purifier refills. Storage is what is ready at once; litres per hour is how quickly it recovers. Boon Homie, for example, purifies at 20 litres per hour into an 8-litre tank.

Is a wall mounted purifier good for rented homes?

Usually, yes. Fitting needs a few screws in the wall plus an inlet connection, a drain line and a socket, and the unit comes down cleanly when you move. Check your rental agreement about drilling, and ask the installer to use the existing water line with a removable connector so you can restore it when you leave.

Does a wall mounted purifier work during a power cut?

It cannot purify without power, because RO needs an electric pump. Whether you can still get stored water out depends on the design: some purifiers lock stored water in when dispensing is electric. Boon Homie has patented manual filling, which lets you draw already-purified water by hand from its 8-litre tank during a power cut.

Homie is our wall-mounted RO: rated up to 2000 TDS, 20 LPH into an 8-litre tank, installed free by Boon’s own team. Pre-order now.

See Boon Homie →

October 16, 2026

Water Purifier Without Electricity: What Actually Works in a Power Cut

No RO purifier works without electricity: reverse osmosis needs a pump to push water through the membrane, and UV needs power too. Non-electric gravity purifiers can remove sediment and deal with microbes, but they cannot reduce TDS. So the right plan for power cuts depends on your water: on a high-TDS supply, keep purified water stored and plan a backup; on a low-TDS supply, a gravity purifier can be a reasonable fallback.

Why RO needs electricity

Reverse osmosis works by forcing water through a membrane with pores so fine that most dissolved salts cannot pass. Water naturally wants to move the other way, from the purer side to the saltier side, so the system has to apply pressure to overcome that. The saltier your water, the more pressure it takes.

Most Indian homes get water from an overhead tank by gravity, at a pressure far too low for this. That is why a home RO purifier has a booster pump, and the pump runs on electricity. The UV stage needs power for its lamp or LEDs, and most purifiers also use electric valves and sensors. Without power, the purification stops.

That is not a design shortcut any brand can avoid. If a product claims to reduce TDS like RO without electricity and without a pressurised supply, ask how.

What non-electric purifiers can and cannot do

“Non-electric” purifiers work by gravity: you pour water into an upper chamber and it trickles through filters into a lower one. Depending on the model, the stages can include:

Sediment filters to take out dust, rust and visible particles.
Activated carbon to improve taste and reduce chlorine and some chemicals.
An ultrafiltration (UF) membrane, fine enough to hold back bacteria and cysts without pressure.
Chemical disinfection, where a cartridge releases a disinfectant to deal with microbes.

What none of these can do is reduce dissolved salts. TDS in, TDS out. If your supply is high in TDS or has dissolved contaminants such as fluoride or nitrate, a gravity purifier will not bring them down. Our comparison of UF, NF and RO purifiers explains why.

On a supply that is already low in TDS, such as treated municipal water in many cities, a gravity purifier can be a perfectly sensible primary or backup option. Our guide on whether you need RO if your TDS is below 200 helps you decide.

Boiling during a power cut

Boiling is the traditional answer and it does one job well: a rolling boil kills bacteria, viruses and parasites. But it needs gas or another fuel, it is slow for a family’s daily water, and it does nothing for TDS. Boiling actually concentrates dissolved salts slightly, because some water evaporates and the salts stay behind. It also does not remove fluoride, arsenic or nitrate.

If you boil, let the water cool covered and store it in a clean, covered container. For the full comparison, see boiling water vs an RO purifier.

Every option compared

Option	Reduces TDS?	Deals with microbes?	Needs power?	Best used for
RO + UV purifier	Yes	Yes	Yes, to purify	Everyday purification, especially on high-TDS supplies
Purified water stored in advance	Already reduced	Already treated; keep it clean and covered	Not to store; depends on how you dispense it	Short and scheduled cuts
Inverter or UPS backup for the RO	Yes	Yes	Yes, from the battery	Frequent or long cuts
Gravity purifier (UF or chemical)	No	Yes, within its design limits	No	Low-TDS supplies
Boiling	No (slightly concentrates)	Yes	Needs fuel, not electricity	Emergency backup

There is no option that reduces TDS without power. On a high-TDS supply, the real answer to power cuts is to have purified water already in storage, and a way to get it out.

A practical power-cut plan

Know your TDS. Everything else follows from this. Check typical TDS for your area, then confirm with a meter at your own tap.
On a low-TDS supply (comfortably within the BIS IS 10500 acceptable limit of 500 mg/L), a gravity purifier is a reasonable backup for microbes during long outages.
On a high-TDS supply, treat stored purified water as your buffer. Keep the purifier’s tank full ahead of scheduled cuts, and fill a few clean steel or glass containers if outages run long.
If cuts are frequent, ask an electrician whether your inverter can include the purifier’s socket, and check the purifier’s rating against your inverter’s spare capacity.
Keep boiling as the last resort for microbes, accepting that it does not fix TDS.
Remember the building pump. If your society’s pump also stops during a cut, the overhead tank may run low, so stored water matters even more.

Your plan starts with your TDS. Look up typical TDS for your pincode before choosing between RO and a gravity purifier.

Check Your Water →

The overlooked problem: getting stored water out

People often assume that if a purifier has litres of clean water in its tank, they can use it during a power cut. With some purifiers that is true: water flows out of a simple tap by gravity. With others, dispensing depends on an electric button, valve or pump, so the stored water stays locked inside until the power returns.

Before you buy, ask a direct question: “How do I get water out of the tank when the power is off?” The answer matters as much as the storage size.

Where Boon Homie fits, and where it does not

Homie has patented manual filling: during a power cut you can draw water by hand from its 8-litre tank. That water has already been purified. Purification itself still needs power, so Homie is not a non-electric purifier; once the tank is empty, you wait for power to return. When the power is on, it purifies at 20 litres per hour through five stages, including an RO membrane rated for input up to 2000 TDS and in-line LED UV before the tank. WaterAI monitoring shows input and output TDS so you know what you are drinking.

Homie is ₹21,900 at the time of writing, on pre-order with deliveries from 15 October 2026, with free installation by Boon’s own team and a 2-year warranty.

Where it does not fit: if you want a purifier that runs entirely without electricity, Homie is not one, and on a low-TDS supply a gravity purifier may serve you better. If your outages last a full day or more, 8 litres will not cover a family, so you still need stored containers or inverter backup. And if your supply is above 2000 TDS, its membrane is not rated for it.

Frequently Asked Questions

Can an RO purifier work without electricity?

No. Reverse osmosis needs pressure to push water through the membrane, and in most Indian homes that pressure comes from an electric booster pump. UV stages need power too. During a power cut an RO purifier cannot purify, though depending on its design you may still be able to draw water already stored in its tank.

Do non-electric water purifiers reduce TDS?

No. Gravity purifiers use sediment filters, carbon, ultrafiltration membranes or chemical disinfection. These can remove particles and deal with microbes within their design limits, but none of them reduce dissolved salts. If your supply is high in TDS or contains fluoride, arsenic or nitrate, a non-electric purifier will not bring those down.

Is a gravity purifier enough for my home?

It can be if your supply is already low in TDS and your main concern is microbes, as with treated municipal water in many cities. Check your TDS first. If it is comfortably within the BIS IS 10500 acceptable limit of 500 mg/L, a gravity purifier is reasonable. If it is higher, you need RO, with stored water for power cuts.

Does boiling water reduce TDS?

No. Boiling kills bacteria, viruses and parasites, but dissolved salts stay in the water. As some water evaporates, TDS actually rises slightly. Boiling also does not remove fluoride, arsenic or nitrate. It is a useful emergency backup for microbes during long power cuts, but it is not a substitute for RO on a high-TDS supply.

Can I run my RO purifier on an inverter?

Often, yes, if the purifier’s socket is on the inverter circuit and the inverter has spare capacity. Ask an electrician to check your inverter’s rating against the purifier’s power requirement before relying on it. If cuts are frequent and long, inverter backup lets the purifier keep working rather than just dispensing stored water.

How does Boon Homie work in a power cut?

Boon Homie has patented manual filling, which lets you draw water by hand from its 8-litre tank during a power cut. That water has already been purified. Purification itself needs electricity, so once the tank is empty you wait for power to return or use stored containers. Homie is not a non-electric purifier.

Homie lets you draw already-purified water by hand from its 8-litre tank when the power goes. Pre-order now, deliveries from 15 October 2026.

See Boon Homie →

October 16, 2026

Hot Water Purifier for Home: How to Choose the Right Type

A hot water purifier for home purifies your water and dispenses some of it hot, so you can make tea, instant food or a warm drink without waiting for a kettle. The two choices that matter are how it heats (instantly as you dispense, or by keeping a tank hot) and whether you also need cold water. If you want chilled water as well, you need a hot-and-cold unit, and Boon Homie Pro, which does instant hot but no cold, is not the right product for you.

Three designs: instant hot, hot tank, hot and cold

Almost every hot water purifier falls into one of three designs. They purify the same way; they differ in how and when the water is heated, and whether anything is chilled.

Design	How it works	Suits	Watch out for
Instant hot	Purified water is heated as it is dispensed. Nothing is kept hot.	Homes that want a few hot cups a day	Heating draws power only while dispensing; check how quickly it delivers a cup
Hot tank	A small reservoir is kept hot by a heater, ready to pour.	Frequent use, several cups in a row	Standby energy use; water standing hot for hours; tank cleaning
Hot and cold	A hot tank or heater plus a cooling system for chilled water.	Homes and offices that want chilled water too	More components, more power, a cold tank that also needs cleaning

Decide the cold question first, because it narrows the field quickly. Many families are happy with water bottles in the fridge for cold and only want hot on tap. Others, especially in hot regions or homes with several people, want chilled water dispensed directly. Both are reasonable; they lead to different machines.

Instant heating vs a hot tank

The difference between these two is mostly about energy, freshness and volume.

Energy. A hot tank loses heat to the room all the time, so its heater keeps switching on to top it up, even when nobody is using it. Good insulation reduces this but cannot remove it. Instant heating only spends energy on the water you actually dispense, with no standby heating.
Freshness. In a tank, the same water can sit hot for hours and be reheated many times before someone drinks it. Instant heating takes water from purified storage and heats each cup as it is poured.
Volume. A tank can deliver several cups back to back because the heat is already stored. Instant heating suits cup-by-cup use; if you need many litres of hot water at once, a tank or a kettle is more practical.
Upkeep. Any tank that holds water benefits from periodic cleaning. Ask how the hot tank is drained and cleaned if you choose that design.

For most homes, instant heating is the better fit: you use hot water a few times a day, and there is no point keeping water hot around the clock for that. For an office pantry where cups are poured in quick succession, a hot tank makes more sense.

Safety: what to look for

Hot water scalds, and a purifier tap is often at a height children can reach or will try to. Before you buy any hot water purifier, check:

A child lock or a two-step press on the hot button. This is worth having in any home with young children. Ask the seller exactly how the hot dispense is protected and try it during the demo.
A clearly marked hot outlet or button, so guests and older relatives do not get hot water by mistake.
Dispensing that stops when you let go or after a set amount, so a cup is not overfilled.
Placement. A wall-mounted unit placed at a sensible height keeps the hot outlet away from small hands. Keep the area below it clear so a cup can sit steadily while it fills.

Materials that touch hot water

Hot water draws substances out of materials more readily than cold water does, which is why food-grade stainless steel is the preferred material wherever drinking water is heated or stored. Ask the seller three questions: what is the tank made of, what is the dispensing nozzle made of, and does any plastic touch the water once it is hot?

Heating also matters for scale. Hard water deposits limescale when heated, which is why kettles in hard-water cities fur up. A purifier that heats water after RO is heating low-hardness water, so scale in the hot path is much less of a problem than it is with tap water in a kettle.

Do you need hot water at all? If cool, purified water is enough, Boon Homie gives you the same purification, Water Profiles and Mineral Enhancers without the heater.

See Boon Homie →

What hot purified water is good for

Tea and coffee without boiling a full kettle for one cup.
Instant food: oats, noodles, soups and ready-to-eat meals that need hot water poured in.
Warm water through the day, which many people prefer to drink in the morning or in winter.
Quick kitchen jobs, such as warming a bowl or dissolving jaggery or honey.

A note on baby formula: follow the instructions from the formula manufacturer and your paediatrician on what water to use and at what temperature. If they tell you to use water that has been boiled, boil it; do not assume that hot water from a dispenser is the same thing. Our guide on choosing a water purifier for baby formula covers the purification side.

It is also worth being clear about what hot dispensing is not. It is a convenience. Safe drinking water comes from purification (in an RO purifier, the membrane and UV), not from heating the water afterwards. If you are weighing purification against boiling in the first place, read boiling water vs an RO purifier.

Office needs vs home needs

An office pantry and a home kitchen look similar but use hot water very differently.

Offices see many cups in short bursts, around arrival, lunch and the afternoon break, and people usually want both hot and cold. A hot-and-cold unit with a tank often fits better. See our water purifier guide for offices.
Homes use a few cups spread across the day. Keeping a tank hot for that wastes energy, and the fridge already handles cold water for most families. Instant hot without cold is often enough.

Where Boon Homie Pro fits, and where it does not

Boon was founded in 2013 by ex-IIT Kanpur engineers and is backed by the Technology Development Board (Govt. of India), NITI Aayog and Roca, with systems in more than 4,000 organisations. Boon Homie Pro is our wall-mounted RO purifier with instant hot water, built for the home pattern described above.

Instant hot water: heated as it is dispensed, not stored hot.
Stainless steel where it counts: a 4-litre stainless-steel storage tank and a stainless-steel nozzle. No plastic touches the hot water.
Everything Homie does: 5-stage purification with an RO membrane rated for input up to 2000 TDS, in-line LED UV before the tank, Water Profiles (Active, Daily, Bev), separate Mineral Enhancer cartridges, WaterAI monitoring of input and output TDS, and patented manual filling for power cuts.
Track: per-person water logging. Each family member gets a user ID in the app and can set a daily goal; press Track on the unit to switch person.
Five buttons: Active, Daily, Bev, Hot and Track.

Homie Pro is ₹25,900 at the time of writing, on pre-order, with free installation by Boon’s own team and a 2-year warranty. If a lock on the hot button is essential for your household, confirm how hot dispensing is protected with Boon before you order, as you would with any brand.

Where it does not fit: Homie Pro has no cold water. If you need chilled water from the purifier, a hot-and-cold unit is the right category, not this one. It is also not built for an office pouring dozens of hot cups an hour, and its membrane is not rated for supplies above 2000 TDS. If you do not need hot water, Boon Homie at ₹21,900 at the time of writing is the simpler choice.

Frequently Asked Questions

Is it safe to drink hot water from a water purifier?

Yes, provided the purifier itself is working properly and the parts that touch hot water are made of suitable materials. Food-grade stainless steel is preferred for tanks and nozzles that handle hot water. Heating in a purifier is a convenience; the safety of the water comes from the purification stages such as RO and UV, not from the heating.

Which is better, instant hot or a hot water tank?

For most homes, instant heating is the better fit. It only uses energy on the water you dispense and heats each cup fresh, while a tank keeps water hot all day and loses heat even when nobody uses it. A tank suits offices and busy pantries where many cups are poured back to back.

Does Boon Homie Pro give cold water?

No. Boon Homie Pro dispenses purified water at room temperature and instant hot water, but it has no cooling system and no cold water. If you need chilled water dispensed from the purifier, a hot-and-cold unit is the right category for you. Many families simply keep purified water in bottles in the fridge for cold.

Can I use hot water from a purifier for baby formula?

Follow the instructions from the formula manufacturer and your paediatrician on which water to use and at what temperature. If they say to use water that has been boiled, boil it, and do not assume that hot water from a dispenser is equivalent. Purified water is a sound starting point, but the preparation method should come from your paediatrician.

Does a hot water purifier use a lot of electricity?

It depends on the design. A hot tank keeps its heater cycling all day to replace heat lost to the room, even when no one is using it. Instant heating draws power only while it heats the water you dispense. Hot-and-cold units add a cooling system, which uses more power again. Ask the seller for the figures for the specific model.

What safety features should a hot water purifier have?

Look for a child lock or a two-step press on the hot button, a clearly marked hot outlet, and dispensing that stops when you let go or after a set amount. Check what the hot path is made of: stainless steel is preferred. Place the unit at a height that keeps the hot outlet out of reach of small children.

Homie Pro gives you purified water and instant hot water from one wall-mounted unit, with no plastic touching the hot water. It has no cold water, so choose it if hot is what you need.

See Boon Homie Pro →

October 16, 2026

How to Choose an Air Purifier for Home in India: A Complete Decision Framework

To choose an air purifier for home, start with the room: work out the CADR it needs, then insist on a true HEPA filter in a sealed housing, a sensor that shows real numbers, and a running cost you can live with. Smart features and design come last. Follow the five steps below in order and most models eliminate themselves.

Step 1: Room Size and CADR

CADR, Clean Air Delivery Rate, is how many cubic metres of clean air a purifier delivers every hour. It is the single number that decides whether a purifier will make a difference you can feel. Everything else on the box is secondary.

To find what your room needs, multiply floor area by ceiling height to get the volume, then multiply by the number of air changes per hour (ACH) you want. For Indian winters, aim for about four to five air changes an hour in a bedroom. A 12 × 12 ft bedroom with a 3 m ceiling holds about 40 m³, so it needs roughly 160 to 200 m³/h.

Measure the room you will actually use it in, not the one you hope it will cover. If you plan to move it between rooms, size it for the largest. The air purifier size calculator does the arithmetic in a few seconds.

Not sure what CADR your room needs? Enter its size and get a number in seconds.

Size Your Room →

Step 2: Filter Grade and Seal

A true HEPA filter is the part that captures fine particles such as PM2.5. Look for a named grade; H13 is the common standard in home purifiers. Avoid “HEPA-type” or “HEPA-like” media, which is not graded to a HEPA standard.

Two things matter as much as the grade. First, the seal: air that leaks around the filter is not cleaned. Second, activated carbon: a layer of carbon helps with cooking smells and some gases, which HEPA cannot catch. More carbon generally helps more; a token dusting does little. A washable pre-filter that catches hair and large dust is a welcome bonus because it protects the HEPA layer.

Step 3: Sensor Quality

The sensor decides when the fan speeds up and slows down. A good one makes Auto mode useful; a poor one makes it either lazy or noisy.

Laser particle sensors count particles by size and can show PM2.5 as a number. They are the better choice.
Infrared sensors are cheaper and coarser, and are usually paired with a colour light rather than a number.
A numeric display lets you check the purifier is working: watch PM2.5 fall after you switch it on. A colour ring alone tells you very little.

Gas sensors (TVOC, NO₂, estimated CO₂) are useful extras for kitchens and homes near traffic, not essentials. The trade-offs are covered in the air purifier features that matter.

Step 4: Smart Features Worth Having

App control earns its place if it does something you would otherwise do by hand: scheduling, remote start before you get home, filter-life tracking, and history charts that show when your air is worst. Voice control through Alexa or Google Home is a convenience. A child lock matters if you have small children. Features that only add colours or animations are design choices, not air cleaning.

Step 5: Noise, Running Cost and Service

Noise. A purifier in a bedroom runs all night, so noise decides whether you keep it on. Check the stated noise figure in dB at the lowest speed or Sleep mode, and be wary of listings that give no figure. A purifier with plenty of CADR can run at a lower, quieter speed and still keep up. For how air and sleep connect, see bedroom air quality and sleep.

Running cost. Replacement filters are usually the larger running cost, then electricity. Look up the current filter price for the exact model, and prefer a unit with an Auto or Eco mode that slows down once the room is clean. The full sums are in our guide to air purifier running cost in India.

Filters and service. Before you buy, confirm that replacement filters are listed and in stock, and that someone will answer if the unit develops a fault. A purifier you cannot get a filter for is a fan. Good habits after purchase are covered in air purifier maintenance and filter care.

In one line: right CADR, sealed true HEPA, a sensor that shows numbers, a quiet night mode and filters you can buy. Everything else is a tie-breaker.

The Checklist

Check	What good looks like	Red flag
CADR	Stated in m³/h, enough for 4 to 5 ACH in your room	Coverage in sq ft only
Filter grade	True HEPA with a named grade, such as H13	“HEPA-type”, “HEPA-like”
Seal	Filter seats firmly with a gasket	Loose filter, visible gaps
Carbon	A real activated-carbon layer	No carbon, or carbon not mentioned
Sensor	Laser particle sensor, numeric PM2.5	Colour light only
Auto mode	Fan responds within minutes to cooking or incense	Stays on one speed regardless
Night noise	Stated dB figure at the lowest speed	No noise figure given
Ozone	No ioniser, or one you can switch off	Always-on ioniser or “plasma”
Filters	Listed, in stock, price known	Not available to buy
Service	A clear way to reach the brand	Marketplace seller only

If you or a family member has breathing difficulty, chest tightness or a cough that does not settle, see a doctor. A purifier reduces exposure to particles; it does not treat a condition.

A Worked Example: Boon Airvana

Here is how Boon Airvana reads against the framework, using only its published specifications:

CADR: 380 m³/h. About 484 sq ft at a 3 m ceiling (around 2.8 air changes an hour), and more than nine air changes an hour in a 12 × 12 ft bedroom.
Filter: dual suction through two filters, with a washable pre-filter mesh, H13 HEPA, activated carbon and an anti-bacterial coating on the filter.
Sensor: AtmoScan reads PM1.0, PM2.5 and PM10 (laser-based), plus TVOC, estimated CO₂, NO₂, temperature and humidity every second, shown as numbers on a full-colour display.
Modes: Auto, Sleep and Eco, four fan speeds, a timer and a child lock.
Smart: the Boon app adds scheduling, air-quality targets, Auto-learn, a diagnostics report and trend charts, and works with Alexa, Google Home and Matter.
Filters: a change-filter reminder based on the air it has cleaned; the pre-filter is washable.

Where it does not fit: a hall much larger than about 484 sq ft is better served by two units placed apart, and no purifier helps with carbon monoxide. Airvana is ₹14,900 at the time of writing.

Frequently Asked Questions

How do I choose an air purifier for my home?

Start with the room. Multiply floor area by ceiling height and by four to five air changes an hour to get the CADR you need. Then insist on a true HEPA filter, ideally H13, in a sealed housing, plus activated carbon. After that, compare sensor quality, night-time noise, running cost and filter availability. Smart features are tie-breakers, not reasons to buy.

What size air purifier do I need for my room?

Size by CADR, not by the coverage claim on the box. Room volume in cubic metres multiplied by the air changes per hour you want gives the CADR in m³/h. A 12 by 12 ft bedroom with a 3 m ceiling needs roughly 160 to 200 m³/h for four to five air changes an hour. The Boon size calculator does this for any room.

Is one air purifier enough for the whole house?

Usually not. A purifier cleans the room it is in, and walls and doors limit how far its airflow reaches. Put one in the room where you spend the most hours, which for most families is the bedroom at night. Add a second for the living room if needed, rather than buying one large unit and expecting it to reach every room.

Which matters more, CADR or HEPA grade?

CADR, for most homes. A sealed H13 filter in a purifier with too little airflow will clean a room slowly, while a correctly sized unit with a good HEPA filter cleans it fast. The filter grade sets how much is caught per pass; CADR sets how often the room’s air passes through. You need both, but size first.

How quiet should an air purifier be for a bedroom?

Check the stated noise figure in dB at the lowest speed or in Sleep mode, and compare models on that number. Be cautious with listings that give no figure. A purifier with more CADR than the room strictly needs can run at a lower, quieter speed through the night and still keep the air clean.

Should I buy an air purifier with an app?

An app is worth having if it does useful work: scheduling, starting the purifier remotely before you get home, tracking filter life and showing when your air is worst. It does not make the air cleaner by itself. If the choice is between a better filter and fan or an app, choose the better filter and fan.

See how Boon Airvana measures up on CADR, filtration and sensing, ₹14,900 at the time of writing.

See Boon Airvana →

October 16, 2026

Best Water Purifier Under ₹25,000 in India: What Your Money Buys

The best water purifier under ₹25,000 is one that matches your water (RO only if your TDS needs it), is rated for your input TDS, shows you its filter health, and comes with dependable installation, service and warranty. At this budget you should expect more than purification alone: monitoring, mineral control or better form factors. If you need none of those, a cheaper tier may serve you just as well.

What ₹20,000 to ₹25,000 Buys Over Cheaper Tiers

A purifier at ₹10,000 and one at ₹24,000 may both use RO. The difference is rarely the membrane alone. Here is what the extra money should buy, and what to check is real:

Feature	What to expect at ₹20,000 to ₹25,000	How to check it
Filtration stages	A clear sequence: sediment, carbon, RO, and UV or equivalent after RO	Ask what each stage does, not just the count
TDS rating	Membrane rated for your input, commonly up to 2000 TDS	Look for the rated input TDS in the specification
Monitoring	Displayed input and output TDS, filter health, alerts	See the display or app, not just the claim
Mineral control	Optional mineral addition that does not bypass purification	Ask whether it adds minerals after RO or blends in untreated water
Form factor	Wall-mounted, under sink or freestanding options	Measure your wall or cabinet first
Service and warranty	Installation by the brand’s own team, clear warranty terms	Read the warranty page before paying

If you do not care about monitoring, mineral control or form factor and your water is straightforward, our guide to the best water purifier under ₹15,000 and ₹20,000 may save you money.

Stage count is not a quality score. Five well-chosen stages can beat nine padded ones. What matters is that the stages match your water and that the TDS rating covers your input.

The 5-Year Cost View

The sticker price is only part of what you pay. Over five years, filter and membrane replacements, service visits and any annual maintenance plan can add up to a large share of the purchase price. A cheaper unit with expensive or frequent filter changes can cost more over its life than a pricier one.

Before buying, ask for: the price of a full filter set, the expected replacement trigger (calendar or usage), what a service visit costs after warranty, and whether there is a maintenance plan worth taking. Our breakdowns of the true cost of owning a water purifier and the 5-year water purifier maintenance cost show how to add it up.

Wall-Mounted, Under Sink or Freestanding

At this budget you can choose the shape that suits your kitchen, which cheaper tiers often do not offer.

Wall-mounted: the most familiar option. Needs a wall near a water point, power and a drain. Easy to reach for service and to read the display. Works for renters with permission to drill.
Under sink: the purifier sits in the cabinet below the counter with a dedicated faucet on top. A clean counter and wall, but needs cabinet space, a counter hole for the faucet and plumbing access.
Freestanding: for heavy use or larger households, or where neither wall nor cabinet works.

The choice between the first two is the most common dilemma at this price. Our comparison of under sink vs wall-mounted water purifiers walks through it.

If your cabinet has the space, Boon Tap puts an 8-stage RO under the sink and leaves only a faucet on the counter.

See Boon Tap →

A Buying Checklist for This Budget

Know your TDS. Measure your tap water. Below about 200 with no other issue, you may not need RO at all.
Match the rating. Confirm the membrane’s rated input TDS covers your water with a margin.
Check monitoring. Displayed input and output TDS and filter health tell you when something changes, rather than guessing.
Understand mineral control. Prefer mineral addition after purification over blending untreated water back in, especially if your water has contaminants.
Pick the form factor. Measure the wall or cabinet, check the drain and power point.
Read the warranty and service terms. Who installs, who services, how long the warranty runs, what is excluded.
Price the next five years. Filters, membrane, service visits.

Red Flags at This Price

Feature lists without specifications. “Advanced purification” with no rated input TDS or stage description.
Health promises. Purifiers make water safe to drink; they do not cure or treat illness. Claims that they do are a warning sign.
Unclear filter costs. If no one will tell you the price of a filter set before you buy, expect a surprise later.
Third-party installation with no accountability. Ask who comes to your home and who you call when something leaks.
Pressure to buy RO for low TDS water. A good seller tells you when you do not need it.
Unverifiable superlatives. “Number one”, “first” and similar claims without a named source.

Boon Options at This Budget

Three Boon purifiers sit at or near this budget. All come with free installation by Boon’s own team, a 2-year warranty and a 10-day money-back guarantee.

	Boon Homie	Boon Tap	Boon Homie Pro
Price (at the time of writing)	₹21,900	From ₹23,500	₹25,900
Form factor	Wall-mounted	Under sink, faucet on counter	Wall-mounted
Purification	5-stage UltraOsmosis RO with in-line LED UV	8-stage UltraOsmosis RO	As Homie
Rated input TDS	Up to 2000	Up to 2000	As Homie
Storage	8 litres, 20 LPH	8 litres	4-litre stainless steel tank
Monitoring	WaterAI: input and output TDS, temperature, filter health	WaterAI monitoring	As Homie, plus Track per-person logging
Extras	Three Water Profiles, Mineral Enhancers, manual filling in a power cut	Hidden under the counter	Instant hot water; no cold water

Homie Pro sits slightly above ₹25,000; consider it only if you want instant hot water from your purifier. If you want chilled water, none of these provide it. And if your TDS is low and you only need microbial safety, an RO at this price is more than you need.

Frequently Asked Questions

What should a water purifier under 25000 include?

At this budget, expect a clear multi-stage RO process with UV or equivalent after RO, a membrane rated for your input TDS, visible monitoring of TDS and filter health, mineral control that does not bypass purification, a choice of form factor, and installation and service by the brand’s own team with clear warranty terms. Check each claim rather than counting stages.

Is it worth spending 25000 on a water purifier?

It is worth it if you will use what the extra money buys: monitoring, mineral control, an under sink or hot water design, or more dependable service. If your water is straightforward and you need none of those, a cheaper purifier may serve you equally well. Compare five-year costs, not just the purchase price, before deciding.

Is under sink or wall-mounted better at this budget?

Neither is better for everyone. Wall-mounted units are easy to reach, simpler to install and suit most kitchens, including rentals with permission to drill. Under sink units keep the counter and wall clear but need cabinet space, a counter hole for the faucet and plumbing access. Measure your kitchen and check drain and power points before choosing.

How much does a water purifier cost to maintain over 5 years?

It varies widely by brand, filter design and water quality, which is why you should ask before buying. Add up the price of filter sets, any membrane replacement, service visits after the warranty, and any maintenance plan. Over five years these can add up to a large share of the purchase price, so a cheaper sticker price can cost more overall.

Do I need RO if my budget is 25000 but my TDS is low?

Not necessarily. If your water’s TDS is low, say below about 200, and your concern is mainly microbes, a purifier without RO may be enough and saves water. Budget is not a reason to buy RO; your water is. Test your TDS first and, if your supply is borewell or tanker water, get a lab test for other contaminants.

Which Boon purifier fits a budget under 25000?

Boon Homie, a wall-mounted RO with 20 litres per hour purification, an 8-litre tank and WaterAI monitoring, is ₹21,900 at the time of writing. Boon Tap, an under sink RO with an 8-litre tank, is from ₹23,500. Boon Homie Pro, which adds instant hot water but no cold water, is ₹25,900, slightly above this budget.

Boon Homie brings RO with UV, live TDS and filter monitoring, Water Profiles and Mineral Enhancers to the wall for ₹21,900 at the time of writing.

See Boon Homie →

October 16, 2026

Best Air Purifier Under ₹15,000 in India: What Each Budget Actually Buys

Under ₹15,000 you can buy a genuinely effective air purifier for an Indian bedroom or a mid-sized living room, provided it has a stated CADR that matches your room, a true HEPA filter and a sealed design. What changes as the budget rises is mostly coverage, sensor quality and smart features, not whether the machine cleans air. Spend on CADR and filter first, extras last.

The Short Answer

Price in this category tracks three things: how much air the fan can push through the filter every hour (CADR), how good the sensor is that decides when to speed up, and how much convenience sits on top (app, display, voice control). The filter technology itself, HEPA media plus activated carbon, is broadly similar across budgets. That is good news: a careful buyer at ₹10,000 can end up with cleaner air than a careless buyer at ₹15,000 who bought a unit too small for the room.

Rule of thumb: pick the budget that buys enough CADR for your room first. Every other feature is a tie-breaker.

What ₹8,000, ₹10,000 and ₹15,000 Buy

The tiers below describe what is typical in the Indian market, not any particular model. Treat them as a map, then check each listing against the rules further down.

Budget	Typical coverage	Filter	Sensor and display	Who it suits
Around ₹8,000	Compact units sized for a small bedroom or study	HEPA (check the grade), often thin carbon	Often none, or a colour light only	One small closed room, a single sleeper
Around ₹10,000	Standard bedrooms; some reach small living rooms	HEPA, usually H13 claimed, modest carbon	Basic particle sensor, colour ring or simple PM2.5 number	A typical 12 × 12 ft bedroom
Around ₹15,000	Large bedrooms and mid-sized living rooms	H13 HEPA, more carbon, sometimes dual filters	Laser particle sensor with numeric PM2.5, sometimes gas sensors and an app	A family room or a bedroom you want cleaned fast

The biggest jump between tiers is usually airflow. A small bedroom needs much less CADR than a 400 sq ft living room, and a bigger fan, bigger filter and better sealing cost money. If your room is small, the lower tier may be all you need. If your room is large, a cheap unit simply cannot move enough air, however good its filter. Our air purifier size guide explains the arithmetic, and the air purifier size calculator does it for you.

What Never to Compromise On

Some features are nice to have. These four are not optional at any budget:

A stated CADR in m³/h. Clean Air Delivery Rate is the only number that tells you how fast a purifier cleans a room. A listing without it is asking you to trust a coverage claim instead.
True HEPA, ideally H13. HEPA media is what captures fine PM2.5. Grade matters less than airflow, but it should be a named HEPA grade, not a vague description.
A sealed filter housing. If air can leak around the filter, the filter grade is irrelevant. Look for a filter that seats firmly with a gasket, not one that rattles in a slot.
Replacement filters you can actually buy. A purifier without a filter supply becomes a fan within a year. Check that the exact filter is listed and in stock before you buy the machine.

Sensors, displays and apps are where you can trade down. A unit with no sensor still cleans air on a fixed speed; you just have to run it sensibly yourself. For what each extra is worth, see the air purifier features that matter.

Red Flags in Budget Listings

“HEPA-type” or “HEPA-like”. These phrases describe media that looks like HEPA but is not tested to a HEPA grade. It may capture far fewer fine particles.
Coverage in sq ft with no CADR. “Covers up to 600 sq ft” means nothing without the CADR and the air-change rate it assumes. Many coverage claims assume one air change an hour or less, which is too slow for Indian winter smog.
Ionisers or “plasma” that cannot be switched off. Some ionisers produce ozone, a lung irritant. A purifier should remove pollutants, not add one. Our HEPA vs ioniser vs UV comparison covers why HEPA is the safer core technology.
“Removes 99.99% of viruses” with no test basis. Big percentages without a stated standard, particle size or test method are marketing, not data.
Very cheap filters from unknown sellers. An ill-fitting filter undoes a good machine.

Boon Airvana pairs a 380 m³/h CADR with an H13 HEPA filter and a laser-based sensor that shows the actual PM2.5 number. ₹14,900 at the time of writing.

See Boon Airvana →

The Price Tag Is Not the Cost

Over three years, replacement filters and electricity can add up to a meaningful share of what you paid for the machine. Two units at the same price can cost very different amounts to own, depending on filter price, how often the filter needs changing in your city’s air, and how the fan behaves when the air is already clean. A unit with a good Auto or Eco mode that slows down once the room is clean will usually use less electricity and wear its filter more slowly than one left on high all day.

Before you buy, look up the current filter price for the exact model and estimate how many you will need. Our breakdown of air purifier running cost in India walks through the sums.

Where Boon Airvana Sits

Boon Airvana is ₹14,900 at the time of writing, at the top of this budget. Here is what that buys, stated plainly:

CADR 380 m³/h. About 484 sq ft at a 3 m ceiling and roughly 2.8 air changes an hour; a 12 × 12 ft bedroom gets more than nine air changes an hour.
Dual suction through two filters. Air is drawn in from both sides.
Four stages: washable pre-filter mesh, H13 HEPA, activated carbon for odours and gases, and an anti-bacterial coating on the filter.
AtmoScan sensor reading PM1.0, PM2.5 and PM10 (laser-based), plus TVOC, estimated CO₂, NO₂, temperature and humidity, every second, shown as numbers on a full-colour display.
Auto, Sleep and Eco modes, four fan speeds, a timer, child lock, and the Boon app with Alexa, Google Home and Matter support.
Filter change by reminder, based on the air the unit has actually cleaned, not a fixed calendar.

When Airvana is not the right buy: if your budget is closer to ₹8,000 and you need to clean one small bedroom, a well-sealed compact HEPA unit with a stated CADR will do that job. If your hall is much larger than about 484 sq ft, two units placed apart will do better than any single purifier in this price range. And no purifier, ours included, removes carbon monoxide.

Frequently Asked Questions

Which is the best air purifier under ₹15,000 in India?

There is no single best model; the best one for you is the one whose CADR matches your room. Under ₹15,000, look for a stated CADR in m³/h, a true H13 HEPA filter, a sealed filter housing, and replacement filters that are in stock. A numeric PM2.5 display and a good Auto mode are worthwhile extras. Avoid HEPA-type filters and coverage claims without CADR.

Is an air purifier under ₹10,000 worth buying?

Yes, for a small or standard bedroom, if it has a stated CADR that suits the room and a true HEPA filter. At this budget you usually give up sensor quality, a numeric display and app control, not filtration. It will not be enough for a large living room. Check the replacement filter price before buying, because that is part of what you really pay.

What CADR do I need for a bedroom?

A 12 by 12 ft bedroom with a 3 m ceiling holds about 40 cubic metres of air. For four to five air changes an hour, which suits smoggy Indian winters, you need roughly 160 to 200 m³/h of CADR. More CADR cleans the room faster and lets the purifier run at a quieter, lower speed. The Boon size calculator works this out for any room.

Is HEPA-type the same as true HEPA?

No. HEPA-type, HEPA-like or HEPA-style media resembles HEPA but is not tested and graded to a HEPA standard, so it may capture far fewer of the fine PM2.5 particles that matter most in Indian cities. A true HEPA filter states its grade, such as H13. If a budget listing avoids naming the grade, treat that as a warning.

Are ionisers in cheap air purifiers safe?

Some ionisers and plasma features produce small amounts of ozone, which irritates the lungs, and they do not remove particles the way a HEPA filter does. If a purifier has an ioniser, you should be able to switch it off. A purifier built around HEPA and activated carbon does not need one to clean the air.

How much does it cost to run an air purifier under ₹15,000?

Running cost has two parts: electricity and replacement filters. Filters are usually the bigger share, and their price and lifespan vary by model and by how polluted your air is. A unit with a good Auto or Eco mode slows down once the room is clean, which saves power and filter life. Always check the current filter price for the exact model before buying.

Boon Airvana: 380 m³/h CADR, H13 HEPA, an eight-parameter sensor and the Boon app, ₹14,900 at the time of writing.

See Boon Airvana →

October 16, 2026